Selvage trimming mechanism



June 30, 1936; D BR W 2,046,286

SELVAGE TRIMMING MECHANISM Filed Nov. 7, 1955 2Sheets-Sheet l INVENTOR. CAEL 0. BROWN.

ATTORNEY.

June 30, 1936. c BROWN SELVAGE TRIMMING MECHANISM Filed Nov. '7, 1955 2 Sheets-Sheet 2 INVENTOR.

CARL 0. BROWN.

I ATTORNEY.

Patented June 30, 1936 ISL'EVLVIAGE TB,

ac 46,28: I V 1 G MECHANISM Carl 1).. Brown, Hopedal'e, Mass., aLssignr f0 Drapenflorporation, 'Hopedale', Mass, a. corporation of Maine sees-av al fillinj'g replenishing. logmsiil actual isehave been princigally of the 1:7 "ti eously operating. type W eiri, a threadicugter blade mountedade 1 ent the cloth selyag ejan'd ber'apeg by. thevlay upon each beat-11p pr. the latter. iorniation of fillin'g ends prod eating s am the cloth. selvage is a relatiy'ely infrequent occurrence. wherefore most oithe. operations of thecontinuously-oper; ating trimming devices .are idle, 0 1,:.1ise1ess.. The bg'gblem o f eliminatiiiig the idle, operatioiis' of the selyage trimming device's, together with [attendant evils, has blee nljo anding and y'eiiatio isg ,.The Emblem isco'mp icated by thefact that, after the replenishing operation, a niimber o' i nicks oitlie shuttle may be made ,b eio-rethevfilling ends have adyanced into the range of the sewage tiiriiiiiing d vices r or attempts, to solye he af pro em have res lt rce tiq r evic s ch are, in turn,. controlled fromthe filling replenish- Ling mechanism. QSiich devices hane usually eluded. timer; which is. necessary if ,the sa vage wmmn device e lf'ep enishine. 7 y 1 101 1 i le posit ri-W 1 555 prior include? time tie e Se mm econ lly 'i ip racticable have not, gone intd conjmei" all use Qthr such dyice's; which 1 1a the 1 4m andsop eraie on imult eously i hnt eprepi n s i .iiiechan sm a e. siiscepfible use only under limited circumstances as will be obvious .aflhevpnesentoin tion DIO'VideS sewage ningdevices M11110 ie norrnally inoperative; tr'iey fixe enab x b in h d tatio iiur l mal Weavin perio afia sl which are retulne i peerat qni roueh. cgni o means which ete t nd. indicates the presence ofga filling"- end proj ectiri'g from the clothselvagenosition to be cut by said devices. invention, inone .of,.it's,as-.- pe i ,thus dis in uishedirqmme ,piioi',art in that cco n t the; nventi tlie operation 1 n-o t ti n of heH elv -ee fi nn nafl v e's i .d e m ne m he pres je Q absence of filling ends in position tQ be ,rather than by operation of the filling replenishing meohanis'in', A further aspect o f the present inyentipnvper; tains to t hep osition o f the control means for th ,se eeeifimmin devices. hat isi ii q means for detecting the presence or absence of a end, as aforesaid 51 necessity delicate andco ild ,be badlydamaged by a trapped shi'ittle iithey fv eizepositionedfon the; loo n temple.

IQhave obviated. possibility of such damage providing control devices which maybe mounted On .thlapwhere they Cannot be engaged by a trapped shuttle. e V ,0 ne preferred embodiment of the present inven: t dy; nmuqes avthreadfoutter blade. whic iis ar- .v ried by the 106m teYfib-l and which is norinally 10 held stationary in inoperativepositignas, byv a sprin .Meansformqyin saidbla e .to' p ra v position is compris ed of a singlelelernentpiyotally mouiitedon theday for movement to and from blade-{moving position'., "Ih'e' blade, r'noyingreleinnt is controlled by a threaid eating means whichlinay be comprised simply of a f eelen wi re piyo-tally ,in'oiinted on the lay in 'positionto be tiltedby a filling end, the 'feleiz when so tilted, directly, engaging the elementlandnnioviifg the 0 latte; 'tdoperative. pzssmp Ihe, pre fefred con: trol devices accordingly consist pf. but two; inwab e pa ts both of .twhichgar stationary. ekcept when callediidto operation by avfilling en d. The said t p igefri'ed erfibodiinent is illustrated onflthe' a-ecomiianyin drawingsg of which; .1

Fignl is a nlan yie-wff semen of hand side 'o'f a lo'onito which its aid embodiment has been appliedthis View illiisti'atirig operation he righ of the parts att hembeginning of the first,,back- Ward beat of the lay following filling i'e'plemshe t'zh l Fig. 2 is a plan iew are portioiiof the, inecha= nism of Fig. 1, thisyieiy shovv'inthiiartslat the endof the forward beat of the lay after filling reialenishment v l K A a Fig, 3 is a yieyv 1y elevation and lifi f ly in; section taken approximately on line 3-3, Fig. 1;

aw d; 'bjgiifiiifin elevation andpartly 40 in section taken approximately on line 4 I,'

d A, 11.15 r s g lifi'g. 5 is a detail; partly in section taken on" lin e s Figj. z, i y.

The loom shown on the dia wings is b'iit if inentarily illustrated, it Being of convent] all design iicept for the sewage trim ing mechais of the pne'sem; invention. oaths corivem tiohal inechalnislrhthfeis Shdwiith lay l WHiCh is reciprocal-Jed forwardly and re'lrwai dly byiiit! men, as 2,,a r1d which carriesa i'e'ed V3 and a shi ttle box 5, the shiittl e. 5. bingpicked along t-he'vlai'l ii the usual nanrii'. I'.h e...p artio ilar it; errr pram-sea wits acanveseaaa names .6

and transferrer I, it'being understood that the V invention is not limited to use with any particular type of filling replenishing means.

also provided with a temple 8 which is of usual construction except as hereinafter described. 7

The filling replenishing means shown operates when the shuttle is in the shuttle box 4 and the lay is at its extreme front position. At 'such clamping device indicated generally at 9 parts with it to the position shownby Fig. 1. t V

lay continues its rearward movement'th'e shut-H and clamps the filling end at a point adjacent the replenishing mechanism. Then, as 'the lay moves rearwardly the parting device 9 moves forwardly carrying the clampedfilling end I As'the tle 5 is picked toward'the left, Fig..1,"laying in thewshed ofwarps W a pick offilling from the 'newly'replenished'supply. The end I of'this pick of filling extends from the shed toa fixed holder, not shown. The subsequent forward move&

in the pick of jfilling 'beingbeaten into the fell,

there being then two filling ends, I and f, .pro-

. J'2,'as shown onFig. '2, is of triangular crossjecting from the cloth selvage'. Such ends must, of oourse,.be cut or trimmed adjacent the cloth selvage.

The.selvagetrimming'devices may be of any suitable form gbut are shown as being comprised '7 with a depending arm I2,.of novel construction} the blades ll) and H beingotherwise substantial of'a movable cutter bladelfl rockably and slidably mounted in the. temple for cooperation with a fixed ledger blade 'I I. The blade 10 isprovided lyrthe same as the prior continuously-operating selva ge trimming devices. The similarity ofj the present selvage trimming devices to prior devices of like nature is'of importance, only as il lustrating how existing loomsmay be converted to embody the selvage trimming mechanism of the I present invention without'providing new temples. I V

The selvageltrimming mechanism. of the pres- V apparent that the running'filling will at all times be: to the rear of the detector. .However, any fill- .Q ingfends which project from the cloth selvage are ent invention comprises, in addition to'suitable trimming devices such 'as those above described,

means for normally holding the trimming device inoperative and for returning the same teoperation upon occurrence'and through control of a filling end projecting from the cloth selvage in position tobe trimmed. In the specificembodiment shown on vthedrawings, the control and operating means for the, movable, cutter blade is comprised of a spring, and adetecting means,

' and a blade moving element.

.. The spring mentioned is shown on thedrawings '7 at l3. It is supported on a stud l4'on thetem ple and has anarm l5 engaging a stud l6 on t he heel. [2 of the cutter blade. This spring is sim lar in construction to that shown in patent to W. I.

' Stimp'son, No. 1,693,942, granted Dec. 4, 1928, ex-

cept that the present spring is reversely wound and reversely biased, to normally hold the cutter blade l0 in its forward or inoperative position.

The spring, itwill be. noted, holds the cutter ibladeabsolutely stationarygwith the arm l2 entirely forward of the path' of the lay; ;As will become apparent, the spring also serves toi m. part'to .the blade its cutting stroke. s V j r The thread detecting: means .'.shown .is comprised of'adetector wire I'Lwhich is. provided with a portion; l8 loosely coiled about a stud 19. The stud I5 is fixed in a part which is adjust-I The loom is,-

Simultaneously with the filling re ably secured 'to a slotted bracket 2| on the fronts 'of the lay. Thus, the detector is. pivotally mounted on the lay by means permitting adjustment of the detector along the lay into proper relation to the temple and the cloth selvage.

The detector normally pointsiupwardly' and forward- 1y from thestud 19, as shown by Figs. '1 and 3. During the normal operation of the loom the 7 running filling pass'esto the rear of the detector r 7 l0 s and accordingly does not engagethe latter. Fill- "ing ends projecting from the cloth selvage will,

however, engage and move the detector as .will

be hereinafteri more fully described. Y 7 The blade moving element is comprised of a spring clip' 22 pivotally mounted on the stud Hi.

The clip normally projects downwardly and for-' wardly from the stud as shown by Fig. l, the limit of downward movement being determined by a fixed stop lug 25. A downwardly and laterally" projecting arm 24 on the detector engages below the lower edge of the clip, the construction. being,

such as to allow a limited lost motion between the; V

detector and. clip butto cause the clip. to be adaptedto pass toropposite, sidesof the arm l2 onrthe movable thread cutterblade. The arm section to facilitate the pushing of the clip onto the arm while the forward ends of the arms of the clip are flared for, the same purpose. In-

clined shoulders 23, .23 on the clip,'when engaged,

rearwardly against the'action of spring l3 as'the lay moves rearwardly. Z The shoulders .23, 23 act as cams to spread thearms of the clip and thereby disengage the latter from the cutter blade when the latter has" reached the movement. 7 V I The operation is as followszfl limit of its rearward During the normal weaving operations, the movable cutter blade, I0, is held stationary 'by' spring i 3, and the detector. l1 and clip'22 remain stationary, or substantially so, all in the position in'which they appear 'on Figs. '1 and 3. It willbe not connected with thefshuttle'or lay and accordingly are notheld: rearwardlyof the detector.

' with thearm l2, pull the-movable cutter blade x Rather, such ends are usually held forwardly'of;

course, comprised of the'projecting end of a pick of filling laid in the shed by the'shuttle and beaten into the fell by the reed; When the lay moves rearwardly, immediately after having beaten in t a pick of filling having a projecting end, the and rides up over the detectoras shown by Fig; 3 and 'thus becomes positioned in front of the detector.

. After a filling end ibecomes-positionedin front tilted by the. former upon the next approach of the lay to its forward position. The parts are so proportioned that the detector will be moved to the position shown on Fig. 4 andin so moving" will move the clip 22 to; anvapproximately horizontal position, such movement'occurring just before the lay has advanced far enough to bring of the'detector, the latter will be engaged and V the clip into contact with the arm "l2. of the thread cutter blade. The final increment of forward movement'o-f the lay results in the clip'22 being pushed onto the. arm l2 as clearly shown.

Then, the lay, in movingrearwardly, pulls the threadlcutter blade to :itsiearward operative position'iand releases it. nssoomasthenutter blade is releasedithe spring f3 'pulls it forwardly, :cutting the filling I end-adjacent the fcloth selvage and ithereafteriholdingttheibladestationaryuntil another filling end .is presented thereto whenthe operationisrepeated.asrabove. Jlhus, .-I .have provided detecting means which detects itbezpre'sence of .a .filling :end adjacent the. selvage ;triinming devices, .means for "normally holding theilatter devices stationary in inoperative position, and =means .fo-r operatively moving the' trimr'ning deviceslonly under control of the detecting means. The selvage trimming devices being stationary at all times except when a filling end lis'iprasented thereto, the wear incident to continued operation of the prior continuouslyoperating devices is practically eliminated. Furthermore, the determining of operation ornonoperation of the trimming devices in accordance with actual presence or absence of a filling end to be cut eliminates the complex timing devices and other parts of the aforementioned prior mechanisms which were connected to the filling replenishing mechanism.

Having fully disclosed the preferred embodiment of the present invention, I claim:

1. In a filling replenishing loom, the combination of selvage trimming means including a movable filling parting member, means normally holding said member stationary in, inoperative position, and means for restoring said member to operation only upon the presentation thereto of a filling end in position to be parted thereby.

2. In. a filling replenishing loo-m, the combination of selvage trimming means including a movable cutter blade, means normally holding said cutter blade stationary in inoperative position, means for detecting the presence of a filling end in position to be cut by said cutter blade, and means controlled by said detecting means for restoring said cutter blade to operation.

3. In a filling replenishing loom, the combination of filling replenishingmeans, selvage trimming means including a movable cutter blade, means normally holding said cutter blade stationary in inoperative position, means for detecting the formation by said replenishing means of filling ends projecting from the cloth selvage, and means con.- trolled by said detecting means for operatively moving said cutter blade to thereby out each filling end formed as aforesaid.

4. In a filling replenishing loom, the combination of the lay, selvage trimming means, means normally rendering said selvage trimming means inoperative, means carried by the lay for detecting the presence of a filling end projecting from the cloth selvage, and means controlled by said, detecting means for rendering said selvage trimming means operative to part said filling end.

5. In a filling replenishing loom, the combination of the lay, selvage trimming means. including a movable cutter blade, means normally holding said cutter blade in inoperative position, means carried by the lay for detecting the presence of a filling end projecting from the cloth selvage in position to be cut by said cutter blade, and means controlled by said detecting means for restoring said cutter blade to operation only when a filling end is present as aforesaid.

6. In a filling replenishing loom, the combination of filling replenishing means, selvage trimming means including a movable cutter blade, means normally holding said cutter blade in inoperative position, means carried by the lay for detectingithespresentation it!) said selvage trim-T reach filling end formed by said-re-i plenishing means, and means controlled by said detectingmeansforoperatively moving said cutter blade toftherebyscut eachisaid'fiiling endupon its detection as aforesaid.

"f2. afiilinglreplenishing loom, the-combination rtheilay, filling replenishing means which, upon :operation, incidentally forms filling ends projecting 1fIIOm'-Tth cloth iselvage, selvage trim ming'means including a :movable cutter blade, means normally holding said :c'utter blade .in inoperative position, means'carriedi'by the :lay .for' detecting the presence of :filling ends adjacent said (selvage trimmingtmeans, and means .controlled said detecting means for operatively movingisaid :cntter sbladeaozily' when filling ends are present as aforesaid. T

8. In a filling replenishing loom, the combination of the lay, selvage trimming means including a movable cutter blade adjacent the cloth selvage, means carried by the lay for detecting the presence or absence of filling ends projecting from the cloth selvage adjacent said cutter'blade, and means controlled by said detecting means for operatively moving said cutter blade when filling ends are present as aforesaid and holding the cutter blade stationary when no such ends are present.

9. In a filling replenishing loom, the combination of the forwardly and rearwardly reciprocating lay, filling replenishing means which, upon operation, incidentally forms filling ends projecting from the cloth selvage, selvage trimming means including a movable cutter blade positioned adjacent the cloth selvage, means normally. holding said cutter blade stationary in inoperative position, means for detecting the presence of said filling ends adjacent said cutter blade, and means controlled by said detecting means for operatively moving said cutter blade to out each said filling endduring the first backward beat of the lay following its detection.

7 10. In a filling replenishing loom, the combination of the reciprocating lay, selvage trimming means including a forwardly and rearwardly movable cutter blade positioned adjacent the cloth selvage, means for detecting the presence of a filling end projecting from the cloth selvage in position to be cut by said cutter blade, a spring comprising means normally holding said cutter blade stationary in its forward position, and means controlled by said detecting means for first moving said cutter blade rearwardly and then releasing the same to control of said spring during the first backward beat of the lay following the detection of said filling end as aforesaid. V

11. In a filling replenishing loom, the combination of the lay, a temple having a movable cutter blade thereon, a spring normally holding said cutter blade stationary in inoperative position, a detector finger carried by'the lay for detecting the presence of a filling end projecting from the cloth selvage adjacent said cutter blade, and means controlled by said detector finger for operatively moving said cutter blade only when a filling end positioned as aforesaid is detected by said finger.

12. In a filling replenishing loom, the combination of the lay, a temple having a forwardly and rearwardly movable cutter blade mounted in a guideway therein, a spring yieldingly holding said cutter blade stationary in its forward position, a detector finger carried by the lay for detecting the presence of a filling end projecting 75 fro m thecloth salvage, and acutter operating member carried by the lay and controlled by'said detector finger for movin isaid cutter blade rear-V a wardly and then releasing thetsame' upon each occurrence of a filling end as aforesaid.

13. In a'filling replenishing loom, the combifrom a position where it engages and operatively x 7 moves said cutter blade, and a'filling end detector carried by the lay and moving'said :cutter operating member to said cutter. operating position'only upon occurrence of a filling end projecting from the cloth selvage adjacent said cutter h lade. V r J i a r 2, 'o4o,2so" 7 V a '7 V 7 V i V 14. In a ruling replenishing'loonl,"the-comm;

nation of the forwardly and rearwardly reciproeating lay, a temple havingqa cutter blade mov-f V ably mounted in a guideway therein, a spring normally yieldingly holdingzsaid cutter blade istationaryin inoperative position,a cutteroperating member mounted on the lay for movement to V from operative position wherein the member. en'- 7 gages said cutter blade and operatively moves the latter,sa'id member being normally in inoperative. 10 position, and a detector flngercarried by the lay;

and moving said memberito operative -position only upon the occurrence ofafllling end projectingfrom the cloth salvage adjacent said cutter V t 7 blade. 7 r a 7 7 152 CARL n. Baown. 

